2121099967433 has 2 divisors, whose sum is σ = 2121099967434. Its totient is φ = 2121099967432.

The previous prime is 2121099967421. The next prime is 2121099967453. The reversal of 2121099967433 is 3347699901212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1409223029449 + 711876937984 = 1187107^2 + 843728^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121099967433 - 2²² = 2121095773129 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121099967453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060549983716 + 1060549983717.

It is an arithmetic number, because the mean of its divisors is an integer number (1060549983717).

Almost surely, 2^{2121099967433} is an apocalyptic number.

It is an amenable number.

2121099967433 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121099967433 is an equidigital number, since it uses as much as digits as its factorization.

2121099967433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4408992, while the sum is 56.

The spelling of 2121099967433 in words is "two trillion, one hundred twenty-one billion, ninety-nine million, nine hundred sixty-seven thousand, four hundred thirty-three".